import Vue from 'vue'
import Router from 'vue-router'
import login from '../components/login'
import Home from '../components/Home'

Vue.use(Router)

const router = new Router({
  routes: [
    { path: '/', redirect: '/login' },
    { path: '/login', component: login },
    { path: '/home', component: Home }
  ]
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的数据
  // from 代表从哪个路径跳转而来
  // next 是一个函数, 表示放行
  //  next() 放行  next('./login') 强制跳转

  if (to.path === '/login') return next()
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next()
})


export default router
